I did pretty well with packing, but I'll second the girls that said bring dark comfy clothes! Bleeding was pretty heavy the first couple days, and I'm sure I bled onto my pants once or twice, but I didn't have to worry about horrible blood stains with dark clothes. Bring chapstick! Having two clear sodas, two popsicles, and ice chips for 36 hours really did a number on my lips. I should have brought more snacks, too. Not so much for the labor, but for the hospital stay later.
In the US they really give you a lot - the mesh underwear, pads, soap, etc. mine also supplied nipple cream when I mentioned I'd lost my tube of it in the room. My own pillow was awesome to have. You also really don't need anything for the baby. A blanket, maybe - as the hospital asked us to not take theirs. We came home with about 25 diapers and a tub of wipes. A coming home outfit is nice, but honestly I just wanted to get the hell out of there as soon as they had my discharge paperwork together so changing baby was the last thing I wanted to fiddle with at the time.